I suspect that Lee was pointing out that in wearing clothing identifying yourself as a LEO that you are making yourself and your family more of a target for shooters in a robbery or shooting spree. OT1H I think I would agree, but OTOH it might discourage the shooting by showing there is a trained shooter / observer in the crowd. I am not LEO, these are just my opinion. I was given a t-shirt that says "I Am Licensed To Carry A Concealed Weapon......". I am hesitant to wear it while carrying for the reason of identifying myself as being armed. I don't want to lose any element of surprise I might have, although anybody dumb enough to attack or attempt to rob me is probably too dumb to read anyway.